<template>
<div>
  <div class="search">
    <input type="text" class="search-input" v-model="keyword" placeholder="输入城市名或拼音">
  </div>
  <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)" >{{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
      </ul>
  </div>
</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from "vuex";

export default {
  name: "CitySearch",
  props:{
    cities: Object
  },
  data() {
    return {
      keyword: '',
      list: [],
      timer: ''
    }
  },
  methods: {
    handleCityClick(city){
      this.changeCity(city);      
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    
    hasNoData () {
      return !this.list.length
    }

  },
  watch: {
    keyword(){
      if(this.timer){
        clearTimeout(this.timer);
      }
      if(!this.keyword){
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities){
          this.cities[i].forEach(value => {
            if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
              result.push(value);
            }
          });
        }
        this.list = result
      }, 100)
    }
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.search)
  },
  
};
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl';

.search {
  height: 0.72rem;
  padding: 0 0.1rem;
  background: $bgColor;
  .search-input {
    box-sizing border-box
    width: 100%;
    height: 0.62rem;
    padding 0 .1rem
    line-height: 0.62rem;
    text-align: center;
    border-radius: 0.06rem;
    color: #666;
  }
}
.search-content{
  z-index 1 
  position absolute 
  top 1.58rem
  left 0
  right 0
  bottom 0
  background #fff
  .search-item{
    line-height .62rem
    padding-left .2rem
    color #666
    background #fff
  }
}
</style>